12240605 has 8 divisors (see below), whose sum is σ = 15818712. Its totient is φ = 9039168.

The previous prime is 12240601. The next prime is 12240607. The reversal of 12240605 is 50604221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 116281 + 12124324 = 341^2 + 3482^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12240605 - 2² = 12240601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12240601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94094 + ... + 94223.

It is an arithmetic number, because the mean of its divisors is an integer number (1977339).

Almost surely, 2^12240605 is an apocalyptic number.

It is an amenable number.

12240605 is a deficient number, since it is larger than the sum of its proper divisors (3578107).

12240605 is a wasteful number, since it uses less digits than its factorization.

12240605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188335.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 12240605 is about 3498.6575997088. The cubic root of 12240605 is about 230.4628674913.

Adding to 12240605 its reverse (50604221), we get a palindrome (62844826).

The spelling of 12240605 in words is "twelve million, two hundred forty thousand, six hundred five".